drm/nv50/pm: s/unk05/vdec/

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_pm.c b/drivers/gpu/drm/nouveau/nouveau_pm.c
index 3ebc3f5..ea620d8 100644
--- a/drivers/gpu/drm/nouveau/nouveau_pm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_pm.c
@@ -154,7 +154,7 @@
 		nouveau_pm_clock_set(dev, perflvl, PLL_CORE, perflvl->core);
 		nouveau_pm_clock_set(dev, perflvl, PLL_SHADER, perflvl->shader);
 		nouveau_pm_clock_set(dev, perflvl, PLL_MEMORY, perflvl->memory);
-		nouveau_pm_clock_set(dev, perflvl, PLL_UNK05, perflvl->unk05);
+		nouveau_pm_clock_set(dev, perflvl, PLL_UNK05, perflvl->vdec);
 	}
 
 	pm->cur = perflvl;
@@ -222,7 +222,7 @@
 
 		ret = pm->clock_get(dev, PLL_UNK05);
 		if (ret > 0)
-			perflvl->unk05 = ret;
+			perflvl->vdec = ret;
 	}
 
 	if (pm->voltage.supported && pm->voltage_get) {